-20.19% is the change from 431 to 344
Calculation steps:
[( 344 - 431 ) ÷ 431] x 100 = -20.19%
Formula
Percentage change = [(344 - 431) / 431] x 100
Subtract the new number by the original number
344 - 431 = -87
-87 ÷ 431 = -0.20185614849187936
-0.20185614849187936 x 100 = -20.19%